NAME atanh, atanhf, atanhl - inverse hyperbolic tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include ... float atanhf(float x ); long double atanhl(long double x …NAME atanh, atanhf, atanhl - inverse hyperbolic tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include ... float atanhf(float x ); long double atanhl(long double x …NAME atanh, atanhf, atanhl - inverse hyperbolic tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include ... float atanhf(float x ); long double atanhl(long double x …